JP6598186B2 - ePTFE film bonding method and ePTFE film bonding material - Google Patents
ePTFE film bonding method and ePTFE film bonding material Download PDFInfo
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- JP6598186B2 JP6598186B2 JP2015013767A JP2015013767A JP6598186B2 JP 6598186 B2 JP6598186 B2 JP 6598186B2 JP 2015013767 A JP2015013767 A JP 2015013767A JP 2015013767 A JP2015013767 A JP 2015013767A JP 6598186 B2 JP6598186 B2 JP 6598186B2
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- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 title claims description 71
- 239000000463 material Substances 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 30
- 239000007788 liquid Substances 0.000 claims description 36
- 238000004381 surface treatment Methods 0.000 claims description 36
- 239000000853 adhesive Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 20
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229910001593 boehmite Inorganic materials 0.000 claims description 13
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 3
- 229920000271 Kevlar® Polymers 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229910010272 inorganic material Inorganic materials 0.000 claims description 3
- 239000011147 inorganic material Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004761 kevlar Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000002759 woven fabric Substances 0.000 claims description 3
- 239000008213 purified water Substances 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
本発明はｅＰＴＦＥフィルムの接着方法及びｅＰＴＦＥフィルム接合材に関する。 The present invention relates to an ePTFE film bonding method and an ePTFE film bonding material.
不活性で、薄くて軽量、かつ耐久性に優れたｅＰＴＦＥ（延伸性ＰＴＦE）フィルムは、グランドパッキン、ガスケットや建築用ファブリック等の種々の分野で用いられている（例えば、特許文献１参照）。このｅＰＴＦＥフィルムは非接着性であるために他の材料と接着することができないが、他の異種類の材料と接着することができれば、非常に多くの分野で活用することができる。 An ePTFE (stretchable PTFE) film that is inert, thin, lightweight, and excellent in durability is used in various fields such as a gland packing, a gasket, and an architectural fabric (see, for example, Patent Document 1). Since this ePTFE film is non-adhesive, it cannot be bonded to other materials. However, if it can be bonded to other different types of materials, it can be used in many fields.
本発明は、上記したような従来技術の問題点を解決すべくなされたものであって、他の材料と容易に接着するｅＰＴＦＥフィルムの接着方法及び他の材料と接着したｅＰＴＦＥフィルム接合材を提供することを課題とする。 The present invention has been made to solve the above-mentioned problems of the prior art, and provides an ePTFE film bonding method that easily bonds to other materials and an ePTFE film bonding material bonded to other materials. The task is to do.
請求項１に係る発明は、ｅＰＴＦＥフィルムに接合材を接合するｅＰＴＦＥフィルムの接着方法であって、ＰＶＡと過硫酸カリウムとＡｌ（ＯＨ）３（ベーマイトゾル）とを水中に分散させた表面処理液を前記ｅＰＴＦＥフィルムの表面に塗布する塗布工程と、前記塗布工程の後に前記表面処理液を乾燥させる乾燥工程と、前記ｅＰＴＦＥフィルムの表面処理液塗布面に接合材を接着剤で接着する接着工程とを備えることを特徴とするｅＰＴＦＥフィルムの接着方法に関する。 The invention according to claim 1 is an ePTFE film adhesion method for bonding a bonding material to an ePTFE film, and is a surface treatment liquid in which PVA, potassium persulfate, and Al (OH) 3 (boehmite sol) are dispersed in water. A coating step of coating the surface of the ePTFE film, a drying step of drying the surface treatment liquid after the coating step, and an adhesion step of bonding a bonding material to the surface of the ePTFE film with the adhesive. It is related with the adhesion method of the ePTFE film characterized by comprising.
請求項２に係る発明は、前記表面処理液中のＰＶＡの濃度が３〜２０質量％であり、過硫酸カリウムの濃度が０．５〜１５質量％であり、Ａｌ（ＯＨ）３（ベーマイトゾル）の濃度が０．５〜１５質量％であることを特徴とする請求項１記載のｅＰＴＦＥフィルムの接着方法に関する。 The invention according to claim 2 is that the concentration of PVA in the surface treatment liquid is 3 to 20% by mass, the concentration of potassium persulfate is 0.5 to 15% by mass, and Al (OH) 3 (boehmite sol ) Is 0.5 to 15% by mass, and relates to the method for adhering an ePTFE film according to claim 1.
請求項３に係る発明は、前記接合材が次の（１）（２）（３）であることを特徴とする請求項１又は請求項２記載のｅＰＴＦＥフィルムの接着方法に関する。
（１）ステンレス、アルミニウム、鉄、銅、合金の金属箔や金属板
（２）ＰＥＴ、ｅＰＴＦＥフィルム、ナイロン、ゴム（ブチル、ＮＢＲ、ＳＢＲ）、ケブラー糸をベースにした織布、木綿布、絹布の有機材
（３）セラミックペーパー、ガラス繊維布、炭化繊維布、炭素繊維布の無機材
The invention according to
(1) Metal foil or metal plate of stainless steel, aluminum, iron, copper, alloy (2) PET, ePTFE film, nylon, rubber (butyl, NBR, SBR), woven fabric based on Kevlar yarn, cotton fabric, silk fabric Organic material (3) Inorganic material of ceramic paper, glass fiber cloth, carbonized fiber cloth, carbon fiber cloth
請求項４に係る発明は、前記接着剤がフェノール樹脂系接着剤であることを特徴とする請求項１乃至請求項３のいずれかに記載のｅＰＴＦＥフィルムの接着方法に関する。
The invention according to
請求項５に係る発明は、ｅＰＴＦＥフィルムと接合材との間にＰＶＡと過硫酸カリウムとＡｌ（ＯＨ）３（ベーマイトゾル）とを有することを特徴とするｅＰＴＦＥフィルム接合材に関する。 The invention according to claim 5 relates to an ePTFE film bonding material comprising PVA, potassium persulfate, and Al (OH) 3 (boehmite sol) between the ePTFE film and the bonding material.
請求項１に係る発明のｅＰＴＦＥフィルムの接着方法によれば、ｅＰＴＦＥフィルムを接合材に容易に接着することができる。 According to the ePTFE film bonding method of the first aspect of the invention, the ePTFE film can be easily bonded to the bonding material.
請求項２に係る発明のｅＰＴＦＥフィルムの接着方法によれば、ｅＰＴＦＥフィルムを接合材に更に容易に接着することができる。 According to the ePTFE film bonding method of the invention according to claim 2, the ePTFE film can be more easily bonded to the bonding material.
請求項３に係る発明のｅＰＴＦＥフィルムの接着方法によれば、ｅＰＴＦＥフィルムと種々の接合材を容易に製造することができる。
According to the ePTFE film bonding method of the invention of
請求項４に係る発明のｅＰＴＦＥフィルムの接着方法によれば、ｅＰＴＦＥフィルムを接合材に容易に接着することができる。
According to the ePTFE film bonding method of the invention of
請求項５に係る発明のｅＰＴＦＥフィルム接合材によれば、ｅＰＴＦＥフィルムが接合材から容易に剥がれない。 According to the ePTFE film bonding material of the invention according to claim 5, the ePTFE film is not easily peeled off from the bonding material.
以下、本実施形態に係るｅＰＴＦＥフィルムの接着方法について、図面を参照しながら説明する。
本実施形態に係るｅＰＴＦＥフィルムの接着方法は、ＰＶＡと過硫酸カリウムとＡｌ（ＯＨ）３（ベーマイトゾル）とを水中に分散させた表面処理液を前記ｅＰＴＦＥフィルムの表面に塗布する塗布工程と、前記塗布工程の後に前記表面処理液を乾燥させる乾燥工程と、前記ｅＰＴＦＥフィルムの表面処理液塗布面に接合材を接着剤で接着する接着工程とを備える。
以下、各工程について説明する。
Hereinafter, the adhesion method of the ePTFE film according to the present embodiment will be described with reference to the drawings.
The ePTFE film adhesion method according to the present embodiment includes a coating process in which a surface treatment liquid in which PVA, potassium persulfate, and Al (OH) 3 (boehmite sol) are dispersed in water is applied to the surface of the ePTFE film; A drying step of drying the surface treatment liquid after the coating step; and an adhesion step of bonding a bonding material to the surface treatment liquid application surface of the ePTFE film with an adhesive.
Hereinafter, each step will be described.
＜表面処理液作成工程＞
塗布工程の前にｅＰＴＦＥフィルムの表面に塗布する表面処理液を下記のように作成する。
表面処理液は、水にＰＶＡと過硫酸カリウムとＡｌ（ＯＨ）３（ベーマイトゾル）とを分散させたものであり、それぞれの濃度は、ＰＶＡが３〜２０質量％、過硫酸カリウムが０．５〜１５質量％、Ａｌ（ＯＨ）３（ベーマイトゾル）が０．５〜１５質量％が好ましい。
この表面処理液は、例えば、下記のＡ液とＢ液を９：１の割合で混合させて作成する。これにより、ＰＶＡが５質量％、過硫酸カリウムが１質量％、Ａｌ（ＯＨ）３（ベーマイトゾル）が１質量％の表面処理液を作成できる。
Ａ液：ＰＶＡが５．５６質量％、アルミナゾルが１８．５６質量％、残りが精製水
Ｂ液：過硫酸カリウムが１０質量％、残りが精製水
なお、アルミナゾル中のＡｌ（ＯＨ）３（ベーマイトゾル）の濃度は６．７質量％である。
また、ＰＶＡは６０℃で水に可溶であり、過硫酸カリウムは７０〜７５℃で水に可溶である。
なお、ｅＰＴＦＥフィルムの厚さ（μｍ）及び密度（ｇ／ｃｍ３）は、特に限定はないが、独立したフィルムであって厚さ５〜２００μｍが好ましい。
<Surface treatment liquid preparation process>
A surface treatment liquid to be applied to the surface of the ePTFE film before the application step is prepared as follows.
The surface treatment liquid is obtained by dispersing PVA, potassium persulfate, and Al (OH) 3 (boehmite sol) in water. The concentration of each of the surface treatment liquid is 3 to 20% by mass of PVA, and that of potassium persulfate is 0.0. 5-15 mass%, Al (OH) 3 (boehmite sol) is preferable 0.5-15 mass%.
This surface treatment liquid is prepared, for example, by mixing the following A liquid and B liquid in a ratio of 9: 1. As a result, a surface treatment liquid containing 5% by mass of PVA, 1% by mass of potassium persulfate, and 1% by mass of Al (OH) 3 (boehmite sol) can be prepared.
Liquid A: PVA is 5.56% by mass, alumina sol is 18.56% by mass, the remaining is purified water B liquid: potassium persulfate is 10% by mass, and the remaining is purified water. Al (OH) 3 (boehmite in alumina sol) The concentration of sol) is 6.7% by mass.
PVA is soluble in water at 60 ° C., and potassium persulfate is soluble in water at 70 to 75 ° C.
The thickness (μm) and density (g / cm 3 ) of the ePTFE film are not particularly limited, but are independent films and preferably have a thickness of 5 to 200 μm.
＜塗布工程＞
ｅＰＴＦＥフィルムの表面に表面処理液を塗布する。塗布する方法に限定はなく、例えばハケによって塗布すればよい。また、量産の場合は、ロールツーロールのコーター機械を使用してもよい。
塗布する厚みとしては、特に制限はないが、３〜３０μｍが好ましい。
<Application process>
A surface treatment solution is applied to the surface of the ePTFE film. There is no limitation on the method of application, and for example, it may be applied by brush. In mass production, a roll-to-roll coater machine may be used.
Although there is no restriction | limiting in particular as thickness to apply | coat, 3-30 micrometers is preferable.
＜乾燥工程＞
塗布工程に続いて、塗布した表面処理液を乾燥させる。
乾燥させる方法に限定はなく、例えば６０〜１００℃で乾燥させればよい。温度を上げ過ぎるとｅＰＴＦＥフィルムが収縮してしまうおそれがある。
<Drying process>
Following the coating process, the coated surface treatment liquid is dried.
There is no limitation on the method of drying, for example, it may be dried at 60 to 100 ° C. If the temperature is raised too much, the ePTFE film may shrink.
＜接着工程＞
乾燥工程に続いて、表面処理液を乾燥させたｅＰＴＦＥフィルムの表面処理液塗布面に接合材を接着剤で接着する。
接合材としては、特に制限はなく、例えば下記のものが挙げられる。
（１）ステンレス、アルミニウム、鉄、銅、合金等の金属箔や金属板
（２）ＰＥＴ、ｅＰＴＦＥフィルム、ナイロン、ゴム（ブチル、ＮＢＲ、ＳＢＲ）、ケブラー糸をベースにした織布、木綿布、絹布等の有機材
（３）セラミックペーパー、ガラス繊維布、炭化繊維布、炭素繊維布等の無機材
接着剤としては、特に制限はなく、有機系接着剤、無機系接着剤（水系）を用いることができ、例えばフェノール樹脂系接着剤である。接着剤の厚みとしては、それぞれの接着剤に適した厚みとすればよく、例えば２〜３０μｍである。
接着方法としては、特に制限はなく、例えば箔や布状の接合材に接着する場合には、ｅＰＴＦＥフィルムと接合材とを２本のローラに挟み、ローラの回転によって接着すればよい。接着温度も、各接着剤に適した温度とすればよい。
上記（２）のように接合材にｅＰＴＦＥフィルムを用い、ｅＰＴＦＥフィルム同士の共接合が可能であり、ｅＰＴＦＥフィルムを積層した任意の厚さでも常温の雰囲気で加工が可能である。
<Adhesion process>
Following the drying step, the bonding material is adhered to the surface of the ePTFE film on which the surface treatment liquid has been dried with the surface treatment liquid application surface.
There is no restriction | limiting in particular as a joining material, For example, the following are mentioned.
(1) Metal foil or metal plate of stainless steel, aluminum, iron, copper, alloy, etc. (2) PET, ePTFE film, nylon, rubber (butyl, NBR, SBR), woven fabric based on Kevlar yarn, cotton fabric, Organic materials such as silk cloth (3) Inorganic materials such as ceramic paper, glass fiber cloth, carbonized fiber cloth, carbon fiber cloth Adhesive is not particularly limited, and organic adhesives and inorganic adhesives (aqueous) are used. For example, a phenol resin adhesive. What is necessary is just to set it as the thickness suitable for each adhesive agent as thickness of an adhesive agent, for example, it is 2-30 micrometers.
The bonding method is not particularly limited. For example, when bonding to a foil or cloth-like bonding material, the ePTFE film and the bonding material may be sandwiched between two rollers and bonded by rotating the rollers. The bonding temperature may be a temperature suitable for each adhesive.
As described in (2) above, ePTFE films are used as the bonding material, and the ePTFE films can be co-joined, and can be processed in an ambient temperature at any thickness where the ePTFE films are laminated.
本実施形態の接着方法によれば、ｅＰＴＦＥフィルムを接合材に強固に接着することができる。また、接着時に静電気が発生することもなく、常温で接着することもできる。
この接着方法によって、箔や布状の接合材とｅＰＴＦＥフィルムとを積層することにより、立体物も形成することができる。
このように、高い接着力が得られるのは、過硫酸カリウムのＯＨ基と、より多くの結合力を持ったＡｌ（ＯＨ）３との配合によって、より強力な結合を発揮することができるためである。
According to the bonding method of this embodiment, the ePTFE film can be firmly bonded to the bonding material. Further, no static electricity is generated at the time of bonding, and bonding can be performed at room temperature.
A three-dimensional object can also be formed by laminating a foil or cloth-like bonding material and an ePTFE film by this bonding method.
In this way, high adhesive strength can be obtained because a stronger bond can be exerted by blending OH group of potassium persulfate with Al (OH) 3 having more bond strength. It is.
＜実施例＞
種々の表面処理液を用い、接合材に接着した後の剥離強度を下記のようにして評価した。
<Example>
Using various surface treatment solutions, the peel strength after adhering to the bonding material was evaluated as follows.
（ｅＰＴＦＥフィルム）
日本ドナルドソン株式会社の厚さ６０μｍのｅＰＴＦＥフィルムを用いた。
(EPTFE film)
An ePTFE film having a thickness of 60 μm manufactured by Nippon Donaldson Co., Ltd. was used.
（表面処理液）
表面処理液の実施例液と比較例液として下記のものを用いた。
実施例液：ＰＶＡ ５質量％、過硫酸カリウム １質量％、Ａｌ（ＯＨ）３ １質量％、残り精製水
比較例液１：Ａｌ（ＯＨ）３ １質量％、残り精製水
比較例液２：ＰＶＡ ５質量％、過硫酸カリウム １質量％、残り精製水
なお、ＰＶＡには、キシダ化学株式会社製「ＰＶＡ５００」を用いた。
また、Ａｌ（ＯＨ）３には、川研ファインケミカル株式会社のアルミナゾル「ＣＳＡ-１１１０ＡＤ」を用いた。
(Surface treatment liquid)
The following were used as an example liquid and a comparative example liquid of the surface treatment liquid.
Example solution: PVA 5% by mass, potassium persulfate 1% by mass, Al (OH) 3 1% by mass, remaining purified water comparative example solution 1: Al (OH) 3 1% by mass, remaining purified water comparative example solution 2: PVA 5% by mass, potassium persulfate 1% by mass, remaining purified water In addition, “PVA500” manufactured by Kishida Chemical Co., Ltd. was used for PVA.
As Al (OH) 3 , alumina sol “CSA-1110AD” manufactured by Kawaken Fine Chemical Co., Ltd. was used.
（接合材）
接合材として、表面をＮＭＰで洗浄した厚さ０．２ｍｍのＳＵＳ３０１の板を用いた。
(Joining material)
As the bonding material, a SUS301 plate having a thickness of 0.2 mm whose surface was washed with NMP was used.
（接着剤）
フェノール樹脂系熱硬化性接着剤（リグナイト社製、Ｒ−１０）を用いた。
(adhesive)
A phenol resin thermosetting adhesive (R-10 manufactured by Lignite Co.) was used.
（接着方法）
（１）一部のｅＰＴＦＥフィルムに、Ａｌ電極でコロナ表面処理を行った。コロナ表面処理の放電量は４００（Ｗ・ｍｉｎ／ｍ２）とした。
（２）ｅＰＴＦＥフィルムの表面に実施例液及び比較例液の表面処理液をハケで均一に塗布した。塗布厚さは１５μｍとした。
（３）表面処理液の塗布後、乾燥させた。乾燥条件は、アルミナだけを含んだ表面処理液を塗布したｅＰＴＦＥフィルムは８０℃、１０minとし、ＰＶＡを含んだ表面処理液を塗布したｅＰＴＦＥフィルムは１００℃、５minとした。
（４）ハケで接着剤をＳＵＳ３０１の表面に厚さ２〜３μｍ塗布した。
（５）ＳＵＳ３０１の接着剤塗布面にｅＰＴＦＥフィルムを密着させ、約３０ｇ／ｃｍ２の荷重をかけながら９８℃で２０min加熱した。
(Adhesion method)
(1) Corona surface treatment was performed on some ePTFE films with an Al electrode. The discharge amount of the corona surface treatment was 400 (W · min / m 2 ).
(2) The surface treatment liquids of the example liquid and the comparative example liquid were uniformly applied by brush to the surface of the ePTFE film. The coating thickness was 15 μm.
(3) After applying the surface treatment liquid, it was dried. The drying conditions were 80 ° C. and 10 min for an ePTFE film coated with a surface treatment solution containing only alumina, and 100 ° C. and 5 min for an ePTFE film coated with a surface treatment solution containing PVA.
(4) The adhesive was applied to the surface of SUS301 by brush to a thickness of 2 to 3 μm.
(5) The ePTFE film was brought into close contact with the adhesive-coated surface of SUS301 and heated at 98 ° C. for 20 minutes while applying a load of about 30 g / cm 2 .
（９０°剥離試験）
（１）ＪＩＳ Ｚ０２３７に準じて剥離試験を行った。
（２）試験機は、島津製作所製ＡＧＳ−Ｘ５０Ｎ（Ｈ２４補機Ｂ−３）を使用した。
（３）試料は１２ｍｍ幅とした。
（４）引張速度３００ｍｍ／ｍｉｎとした。
（５）引きはがし始め２５ｍｍは無視し、その後の５０ｍｍの剥離力の平均をとった。
（６）試験数はそれぞれ３回とし、その平均をとった。
(90 ° peel test)
(1) A peel test was performed according to JIS Z0237.
(2) AGS-X50N (H24 auxiliary machine B-3) manufactured by Shimadzu Corporation was used as the test machine.
(3) The sample was 12 mm wide.
(4) The tensile speed was 300 mm / min.
(5) 25 mm at the beginning of peeling was ignored and the average of the subsequent peeling force of 50 mm was taken.
(6) The number of tests was 3 times, and the average was taken.
（試験結果）
試験結果を表１に示す。
また、表１での試験Ｎｏ．１の剥離試験のチャートを図１（ａ）に示し、試験Ｎｏ．3のチャートを図１（ｂ）に示す。
(Test results)
The test results are shown in Table 1.
In addition, test no. The peel test chart of No. 1 is shown in FIG. The chart of 3 is shown in FIG.
表面処理液が実施例液（ＰＶＡ ５質量％、過硫酸カリウム １質量％、Ａｌ（ＯＨ）３ １質量％、残り精製水）で、コロナ放電を行っていない試験Ｎｏ．1の場合には、他の試験Ｎｏ．よりも圧倒的に高い強度を示した。そして、この場合には、層間で破壊しているので、これ以上の接着力はないと思われる。
このように、本発明の接着方法によって、ｅＰＴＦＥフィルムを容易に接合材に接着させることができる。
The surface treatment solution is an example solution (PVA 5% by mass, potassium persulfate 1% by mass, Al (OH) 3 1% by mass, remaining purified water), and the test no. In the case of 1, other test No. The strength was overwhelmingly higher. In this case, it is considered that there is no further adhesive force because it is broken between layers.
Thus, the ePTFE film can be easily adhered to the bonding material by the adhesion method of the present invention.
本発明のｅＰＴＦＥフィルムの接着方法は、ガスケット、パッキンをはじめ、工業、家電、民生用の種々の複合材に好適に使用される。 The bonding method of the ePTFE film of the present invention is suitably used for various composite materials for industrial use, household appliances and consumer use, including gaskets and packings.
Claims (7)
ＰＶＡと過硫酸カリウムとＡｌ（ＯＨ）３（ベーマイトゾル）とを水中に分散させた表面処理液を前記ｅＰＴＦＥフィルムの表面に塗布する塗布工程と、
前記塗布工程の後に前記表面処理液を乾燥させる乾燥工程と、
前記ｅＰＴＦＥフィルムの表面処理液塗布面に接合材を接着剤で接着する接着工程とを備えることを特徴とするｅＰＴＦＥフィルムの接着方法。 An ePTFE film bonding method for bonding a bonding material to an ePTFE film,
An application step of applying a surface treatment liquid in which PVA, potassium persulfate, and Al (OH) 3 (boehmite sol) are dispersed in water to the surface of the ePTFE film;
A drying step of drying the surface treatment liquid after the coating step;
And a bonding step of bonding a bonding material to the surface of the ePTFE film to which the surface treatment solution is applied with an adhesive.
（１）ステンレス、アルミニウム、鉄、銅、合金の金属箔や金属板
（２）ＰＥＴ、ｅＰＴＦＥフィルム、ナイロン、ゴム（ブチル、ＮＢＲ、ＳＢＲ）、ケブ
ラー糸をベースにした織布、木綿布、絹布の有機材
（３）セラミックペーパー、ガラス繊維布、炭化繊維布、炭素繊維布の無機材 The bonding method for an ePTFE film according to claim 1 or 2, wherein the bonding material is the following (1), (2), or (3).
(1) Metal foil or metal plate of stainless steel, aluminum, iron, copper, alloy (2) PET, ePTFE film, nylon, rubber (butyl, NBR, SBR), woven fabric based on Kevlar yarn, cotton fabric, silk fabric Organic material (3) Inorganic material of ceramic paper, glass fiber cloth, carbonized fiber cloth, carbon fiber cloth
いずれかに記載のｅＰＴＦＥフィルムの接着方法。 The method for adhering an ePTFE film according to any one of claims 1 to 3, wherein the adhesive is a phenol resin adhesive.
ＰＶＡと過硫酸カリウムとＡｌ（ＯＨ）３（ベーマイトゾル）とを水中に分散させたことを特徴とする表面処理液。 It is a surface treatment liquid that is applied to the surface of an ePTFE film to facilitate adhesion between the ePTFE film and a bonding material,
A surface treatment liquid comprising PVA, potassium persulfate, and Al (OH) 3 (boehmite sol) dispersed in water.
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